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Technical Data Sheet
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55271 — NUT,PLAIN,HEXAGON

✓ Government record, cited
Legrand · NUT WASHER
PRODUCT OVERVIEW

55271: NUT,PLAIN,HEXAGON.

- High performance Polyactic Acid (PLA) for material extrusion - Biopolymer derived from plants - Good post-printing workability - Odourless - Main applications: Concept modelling for food packaging, transport containers, medical/hygienic products, housings. Education. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-514-4638, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
55271
NSN: 5310-00-514-4638
FSC: 5310 — Nuts and Washers
CAGE: 65282 — WHITE MOTOR CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 4615 OVERALL
nut_styleHEXAGON
nut_height0.266 INCHES NOMINAL IN
thread_class3B
thread_seriesUNF
hardness_rating11.0 ROCKWELL C MINIMUM AND 17.0 ROCKWELL C MAXIMUM
thread_directionRIGHT-HAND
width_across_flats0.500 INCHES NOMINAL IN
nominal_thread_size0.375 INCHES IN
bearing_surface_typeWASHER FACED
thread_quantity_per_inch24
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-514-4638
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 55271 · Legrand ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
WIDTH ACROSS FLATS: 0.500 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
HARDNESS RATING: 11.0 ROCKWELL C MINIMUM AND 17.0 ROCKWELL C MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
NUT HEIGHT: 0.266 INCHES NOMINAL IN
•
NUT STYLE: HEXAGON
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.500 INCHES NOMINAL IN
THREAD SERIESUNF
HARDNESS RATING11.0 ROCKWELL C MINIMUM AND 17.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.375 INCHES IN
NUT HEIGHT0.266 INCHES NOMINAL IN
NUT STYLEHEXAGON
THREAD CLASS3B
THREAD QUANTITY PER INCH24
SUBSTITUTES & CROSS-REFERENCES 6
38058Reference document
Same NSN cross-reference
Reference document — Secondary reference
643433Reference document
Same NSN cross-reference
Reference document — Secondary reference
186AReference document
Same NSN cross-reference
Reference document — Secondary reference
51117RReference document
Same NSN cross-reference
Reference document — Secondary reference
91661Reference document
Same NSN cross-reference
Reference document — Secondary reference
2186AReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 55271?
55271 is a NUT,PLAIN,HEXAGON manufactured by Legrand.
What parts can replace 55271?
There are 6 known substitutes for 55271: 38058, 643433, 186A and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 55271?
55271 is cataloged in the U.S. Government catalog under NSN 5310-00-514-4638. This indicates validated use in U.S. government and defense supply chains.
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